PlantUml Graphviz generates 2 duplicate diagrams

Question

I have this markdown code that is going to be generated into an html file using plantuml and graphviz.

 @image html Module23Static.png TC3
 @startuml{Module23Static.png}
   caption Module Dependencies and Interfaces of Module 23
   skinparam componentStyle uml2
     package "SW_Component"{
       [Module 1\n--\n provided interfaces:\n func1\n data1\n--\n required interfaces:\n Module2\n Module3] as M1
       [Module 2\n--\n provided interfaces:\n func2\n--\n required interfaces:\n interface_3\n Module4] as M2
       [Module 4\n--\n provided interfaces:\n func7\n func8] as M4
       M1 ..> M2 : use
       M2 ..> M4 : use
     }
 @enduml

This block of code will generate the same diagram twice, one after the other. I want it to create the diagram once only.

If I remove the line "@image html Module23Static.png TC3", it gives me a "Dot Executable: File does not exist Cannot find Graphviz..." error. I already have Graphviz 2.50 and Doxygen 1.8.14 installed, and I have also set the GRAPHVIZ_DOT variable.

I am running on Windows, and using a batch file to generate the doxygen with plantuml and graphviz installed.

What am I missing here? Anyone encountered the same issue before?

Answer 1

Doxygen will, based on the @startuml ... @enduml create an image with the name Module23Static.png and add it to the output. Beforehand you also use @image html Module23Static.png TC3 and this also adds the same image, hence you get twice the image.

So you can remove the image html Module23Static.png TC3